Yeah I seen the gas bottle...it's in the battle of Carthage. Just after the chariot explodes through the wooden gates another chariot tips on the side and a black cloth falls away exposing a C02 canister on the floor of the chariot.
nice
Yeah, there is on scene where a chariot tips on its side in the battle of Carthage(in the colosseum), when the dust clears you can clearly see a large canister. It's after one chariot flips through a gate and before a chariot hits a statue.
I saw this on TV a few months back. The canister you see is a bottle of compressed air, which is stored there because it was used to flip the chariot, or so I've heard.